KR900003022B1 - Method for jointing bridge slab - Google Patents

Abstract

The method for joining bridge slab can reduce additional stresses from uneven settlement of supporting cross beam in the sole plate of bridge structure. The method includes sole plate (1) located in crossbeam (2), thickness adjustinglayer (4) between haunch (3) and cross beam flange (2a). Elastic body (5) formed in a ushaped clamp includes a leaf spring.

Description

Joining method of top plate and base

1 is an explanatory diagram showing an embodiment of the present invention.

2 is an explanatory diagram showing another embodiment.

3 is an explanatory diagram showing an embodiment in which a new structure is added to the embodiment of FIG.

FIG. 4 is an explanatory diagram for planar explanation of the new structure shown in FIG. 3; FIG.

5 is an explanatory view showing the behavior of the upper plate according to the load.

* Explanation of symbols for the main parts of the drawings.

1: top plate (bottom plate) 2: purlin

2a: flange 3: haunch

4: thickness adjusting layer 5: elastic body

5a, 5b: end of elastic body 6: bolt

6a: bolt head 7: washers of different thickness

8,9: usually come 10: nut

11: notch 12: A phase absence

13: moving member 13a: attachment portion

13b: Constraints

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method of joining a support plate of a top plate for the purpose of attenuating additional stress caused by uneven settlement of the support plate of the top plate of a bridge structure.

In the bridge structure, the top plate is the part where load (load) acts most severely and is often damaged. There are many causes of top plate damage, but it is possible to think of nogative stress due to the subsidence of the top plate, that is, the bending of the support plate supporting the top plate. In addition, the RC top plate is a continuous plate made of a combination of a plurality of vertical and horizontal purlins as a point, but the top plate supporting the top plate deteriorates due to the passage of time.

In particular, when affected by rough wind, or by calcium chloride as an appropriate removal means, the top plate is weakened in both the flange and the slab, and the stiffness of the purlin is significantly degraded. When there is a difference in the rigidity of each member of the top plate, the top plate point causes various uneven settlements, and as a result, the additional stress due to the point settling along with the bending stress caused by the goods on the top plate promotes the top plate damage.

In addition, the upper plate shown in FIG. 5 and FIG. 6 as an example of the upper plate behavior due to loading shows the behavior of twisting like the dotted line of FIG. 5 and lifting up like the dotted line of FIG. Where 1 is the top plate and 2 is the purlin.

The present inventors previously controlled such behavior by changing the elastic body, and in order to alleviate one cause of breakage of the upper plate, the upper plate and the support plate are tightened by using fasteners, such as fastening bolts, using an elastic body such as a leaf spring. An invention relating to a method of combining and supporting purlins was disclosed in Japanese Unexamined Patent Application Publication No. 59-42125.

This method obtains a fixing point for fixing an elastic body such as a leaf spring at an arbitrary position of a reinforcement having a certain size located on the upper plate, and fixes the middle of the elastic body using a fastener such as a fastening bolt. Finding the point to receive the point to the end of the elastic body, it is made of a configuration to fasten the purlin and the top plate with the elastic force of the elastic body.

The idea is that when the joints in the areas where there is a risk of stress concentration or additional stress are tightened through the elastic body with a constant coercive force, they are buffered by the deformation of the elastic body, and as a result, the accumulation of stress is attenuated and the plate loss of the upper plate is reduced. Although it can prevent, the structure here is a fastening of a purlin and a top board or a purlin and an elastic body only in a vertical direction, and the movement control of a horizontal top board was not considered.

The present invention further develops the present invention to provide a method of joining and joining the top plate and the support purlin that enables not only the movement control in the vertical direction of the top plate but also the movement control in the horizontal direction.

The present invention obtains a fixing point for fixing an elastic body folded into a top plate bottom surface on the bottom surface of the present invention, and the elastic body is fixed to the fixing point by using washers and fasteners having different thicknesses. The point of elastic body is defined on the cross section of the flanjin and the lower surface of the flange of the purlin, and the point defined on the cross section of the flange is received as one end of the elastic body, and the point defined on the lower surface of the flange is received as the other end of the elastic body to fasten the purlin and upper plate by the elastic force of the elastic body. By using the method of joining and joining the upper plate and the supporting plate, the fixing point for fixing the elastic body folded into the upper plate surface is obtained from the upper plate surface, and the fastener is made by inserting washers of different thickness into the fixing tip. To fix it and to fix and fix the moving constrainer that has formed a recess in the cross section of the flange of the purlin. The point of the elastic body is determined at the recess of the movable restraint and the bottom surface of the flange of the purlin, and the point of contact with the recess of the movable restraint is received at one end of the elastic body. The above problems are solved by using a top plate and a support purlin joining method characterized by fastening a purlin and a top plate.

Next, an embodiment of the present invention will be described with reference to FIGS.

1 and 2 show that the present invention is implemented on the RC top plate, where 1 is a top plate, 2 is a purlin, 5 is an elastic body, and 7 is a washer having a different thickness.

The top plate 1 is provided with a thickness adjusting layer 4 between the bottom surface of the haunch 3 of the top plate 1 and the top surface of the flange 2a of the purlin 2, as known in the art. Located in

The elastic body 5 is formed by the leaf spring etc., and is formed in the dipping shape of the phenomenon which deform | transformed U-shape.

The elastic body 5 has its one end 5a at the end face of the flange 2a of the purlin 2 and the other end 5b at the bottom of the flange 2a of the purlin 2, respectively. At the same time, the middle of the folded shape is inserted through a fastener such as a fastening bolt 6 or the like, and fastened to the haunch 3 that is the upper plate surface with a constant tightening force.

Specifically, in FIG. 1, washers 7 having different thicknesses are sandwiched between the lower surface of the haunch 3 and the elastic body 5. As for the washers with different thicknesses, at least one surface is formed obliquely as is known.

Here, the washer 7 with different thicknesses is placed on the side of the haunch, and the inclined surface is directed toward the purlin 2 and the elastic body 5 when the horizontal plane of the washer 7 with different thickness is depressed.

An ordinary washer 8 is fitted on the bolt head 6a side of the fastening bolt 6 as necessary. In addition, the other end of the fastening bolt 6 is fixed to the notch 11 of the upper plate 1 by the well-known method using the nut 10 and the washer 9 in this embodiment.

In FIG. 2, the position of the washer 7 which differs in the shape and thickness of the elastic body 5 is shown with the Example different from the case of FIG.

Here, the washers 7 with different thicknesses are placed on the side of the bolt head 6a so that the horizontal surfaces of the washers 7 with different thicknesses face the bolt head 6a with the inclined surface in the direction of the purlin 2 and the elastic body 5. Doing. The shape of the elastic body 5 is a shape suitable for the inclined surfaces of the washers 7 having different thicknesses, and the upper and lower sides are almost opposite to those in FIG. The other structure is almost no different from that of FIG.

In addition, although the upper body 12 is interposed between the one end of the elastic body 5 and the end face of the flange 2a of the purlin 2, this structure also has a point defined by the flange cross section of the purlin according to the present invention. It can be said that it is structure that we receive at first. That is, the present invention does not deny that the elastic end and the point are indirect.

3 shows an embodiment in which new configuration requirements are added to the embodiment shown in FIG.

Specifically, the moving restraint body 13 is formed by forming a concave portion in the shape of a plane thereof by the attachment portion 13a and the restraint portion 13b, and the thickness adjusting layer near the cross section of the flange 2a of the purlin 2. The attachment part 13a is fitted in the attachment insertion part of (4), and the restraint part 13b is closely attached to the end surface of the flange 2a of the purlin 2. As shown in FIG.

One end of the elastic body 5 is inserted into the recess, and the recess is a point of one end of the elastic body 5.

The elastic body 5 is formed in the folded shape of the shape which deform | transformed U shape and consists of leaf | plate spring etc. like a 1st diagram.

And one end 5a of this elastic body 5 is inserted into the recessed part of the said moving restraint body 13 provided in the cross section of the flange 2a of the purlin 2, and this recessed part is received as a point, and the other end (5b) as a point on the lower surface of the flange (2a) of the purlin (2), while the middle of the folded shape through the fasteners such as fastening bolts 6, etc. Is fastened.

In addition, although the moving restraint body 13 is interposed between the end face of the flange 2a of the purlin 2 and the end of the elastic body 5, the elastic body 5 is a point determined at the point of the end face of the flange 2a according to the present invention. It can be said that it is structure to be received in one end of).

The difference here is that the moving restraint body 13 has an added effect that is not present in the embodiment of Figs.

The present invention is composed of the above-described configuration has the following effects.

First of all, cohesion or additional stress is generated-the upper part and the purlin are fastened by tightening force through the elastic body, so the vertical movement can be alleviated by the deformation of the elastic body even when the cohesive force or additional stress occurs. .

Furthermore, when the point of the elastic body is obtained at the cross-section and the lower surface of the purlin, and the end of the elastic body is received at each point, and the washers of different thicknesses are used, there is no stress concentration or additional stress when the stress concentration or additional stress is generated. Constrain the purlin and control the horizontal movement of the length of the top plate.

In addition, since the movable restraint body is provided and the recessed portion of the movable restraint body is the point of the elastic body defined on the flange end face, and the elastic end portion is placed therein, the movement in the horizontal direction of the width is also restrained.

Claims (2)

A fixing point for fixing an elastic body folded into the upper surface is obtained on the upper surface, and the elastic body is fixed to the fixing point by using washers and fasteners having different thicknesses. The upper plate and the supporting plate are characterized in that the bottom of the elastic body is determined on the lower surface, the point defined on the cross section of the flange is received as one end of the elastic body, and the point defined on the lower surface of the flange is received as the other end of the elastic body to fasten the purlin and the top plate by the elastic force of the elastic body. Collective bonding method. A fixing point for fixing an elastic body folded into the upper surface is obtained from the upper surface, and the elastic body is inserted into the fixing tip using a washer to fix the elastic body, and a recess is formed in the cross section of the flange of the purlin. A moving restraint body is fixedly attached, a point of the elastic body is set on the recess of the moving restraint and the lower face of the flange of the purlin, the point of contact with the recess of the moving restraint body is received as one end of the elastic body, and the point determined on the bottom face of the elastic body is Joining method of the top plate and the support plate is characterized in that the fastening and the top plate as the elastic force of the elastic body is received at the other end of the.

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